Volvo Penta 10W-40 4-Stroke Synthetic Engine OilVolvo Penta's 4-stroke fully synthetic engine oil is engineered to deliver maximum protection and performance to gasoline marine engines. This engine oil is specifically engineered for 4-stroke gas engines with catalytic converters. The advanced synthetic formulation provides superior lubrication, resists oxidation, reduces wear, and maintains optimal viscosity across a wide temperature range. Whether cruising at high RPM or idling in the marina, this oil ensures smooth operation and a long lasting engine life.Volvo Penta 10W 40 Engine Oil Benefits: Fully synthetic formula; Catatlytic converter safe; Reduces engine wear, sludge, and deposits; Provides reliable cold start performance; Outstanding thermal stability; How much oil does my engine need?It varies model to model, check out our Volvo Oil Capacity Guide for more information and capacity charts!Volvo Penta 10W-40 Marine Engine Oil Sizes Available 21681794 - Quart; 21681795 - Gallon; //